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Re: Turbo Cool Down (edonald849)

Not, only when driven hard a 30 second to a minute cooldown is adviced.
 

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Re: Turbo Cool Down (Johann)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johann</b> »</i></TD></TR><TR><TD CLASS="quote">Not, only when driven hard a 30 second to a minute cooldown is adviced.</TD></TR></TABLE><p>Wow, is that true?? How does it cool down in a minute without an oil cooler? Not that I disagree, I just never knew. I always let mine cool down 3 minutes after pushing the car. Another question... does driving hard, and then driving normally, averaging around 2200 revs work to cool down?
 

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Re: Turbo Cool Down (JOSBRO)

Yes it will cool down. Problem is that after more than a minute-maybe two minutes and specially with hot weather you are only keeping the exhaust at a higher temperature.<br>When shutting down the engine the coolant will keep running through the turbo even when the engine is off, character of a closed coolant system where the coolant is heated by the turbo and will keep flowing moving colder coolant through the turbo in the process.<br>So far the fastest way I have seen to cool down the exhaust is to let the car roll while engine braking or with the throttle off better said, just let go on the throttle in 3rd or 4th gear and keep the clutch engaged. This way the engine will suck air without combustion and it will cool down the exhaust significantly.
 

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Re: Turbo Cool Down (Johann)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johann</b> »</i></TD></TR><TR><TD CLASS="quote">So far the fastest way I have seen to cool down the exhaust is to let the car roll while engine braking or with the throttle off better said, just let go on the throttle in 3rd or 4th gear and keep the clutch engaged. This way the engine will suck air without combustion and it will cool down the exhaust significantly.</TD></TR></TABLE><p>Wow, that makes way too much sense for me not to have thought of it before.
 

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Re: Turbo Cool Down (JOSBRO)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JOSBRO</b> »</i></TD></TR><TR><TD CLASS="quote">Wow, is that true?? How does it cool down in a minute without an oil cooler?</TD></TR></TABLE><p>I wouldn't call it "cooling" but rather allowing your turbo to relax after a hard run. Remember, the turbine is spinning at tremendous speeds and builds a lot of heat.
 

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Re: Turbo Cool Down (MagoonR)

I also wondered the same thing on cooling the turbo. This product figures out how long the cooling period should last and you can custom program it yourself as well. This turbo timer is also a <U>boost gauge as well<U>It is the only one in the <U>world<U> that does both. I have found it to work quite well.<IMG SRC="http://www.blitz-performance.com/product%20image/TDttSize.jpg" BORDER="0"><A HREF="http://www.blitz-performance.com/Blitz_Turbo_Timer_Dtt.htm" TARGET="_blank">http://www.blitz-performance.c...t.htm</A>
 

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Re: Turbo Cool Down (Mash)

Mash- That a nice product. I've seen that before, never realized it reads boost as well..now I'm interested in it. Does it read in psi also or only hkpa??
 

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Re: Turbo Cool Down (Johann)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johann</b> »</i></TD></TR><TR><TD CLASS="quote">This way the engine will suck air without combustion and it will cool down the exhaust significantly.</TD></TR></TABLE><p>Well, technically, there is still combustion if the engine is running. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> <p>Yannis
 

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Re: Turbo Cool Down (MagoonR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>MagoonR</b> »</i></TD></TR><TR><TD CLASS="quote"><p>I wouldn't call it "cooling" but rather allowing your turbo to relax after a hard run. Remember, the turbine is spinning at tremendous speeds and builds a lot of heat.</TD></TR></TABLE><p>Exactly. In the auto lingo, it is called letting the turbo <i>SPOOL DOWN</i>.<p>Yannis
 

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Re: Turbo Cool Down (GrecianVolvo)

The Blitz gauge reads in hkpa. Once I figured out the conversion from psi to hkpa it reads easy(1 bar=14.7 psi). And it has a digital bar to tell how far up the boost is as well. I really like it.
 

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Re: Turbo Cool Down (GrecianVolvo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>GrecianVolvo</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Well, technically, there is still combustion if the engine is running. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> <p>Yannis</TD></TR></TABLE><p>No. combustion needs an explosion, off throttle above 2800 rpm the engine is only pumping air because there is no fuel.. <br>
 

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Re: Turbo Cool Down (Johann)

Johann, I'm surprised at you; when you put your clutch in, you're at least "idling" the engine @ 700-800 RPM. The cylinders are <B>STILL </B>firing, hence some combustion. There ARE "explosions" in the cylinders.<br>
 

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Re: Turbo Cool Down (Short Circuit)

Johann's right. No fuel while the engine is being driven by the drivetrain (engine braking).
 

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Re: Turbo Cool Down (Johann)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Johann</b> »</i></TD></TR><TR><TD CLASS="quote">No. combustion needs an explosion, off throttle above 2800 rpm the engine is only pumping air because there is no fuel.. </TD></TR></TABLE><p>Actually more like above 1500RPM.
 

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Re: Turbo Cool Down (Short Circuit)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Short Circuit</b> »</i></TD></TR><TR><TD CLASS="quote">Johann, I'm surprised at you; when you put your clutch in, you're at least "idling" the engine @ 700-800 RPM. The cylinders are <B>STILL </B>firing, hence some combustion. There ARE "explosions" in the cylinders.</TD></TR></TABLE><p>But I said not to put the clutch in.. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0">
 

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I've owned 4 turbo cars and what I have learned is if you really drive the car hard you should let it idle until the fans come on and go off. that's what I was told by a few turbo performance guys. I've never had a turbo issue following that advice.
 

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Re: (spudmanmike)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>spudmanmike</b> »</i></TD></TR><TR><TD CLASS="quote">Seen 0.0 ms injector pulsewidth on my SS while engine braking, there is absolutely no fuel being shot in. Suspect the same with our cars.</TD></TR></TABLE><br>Dial up "Instantaneous mpg" on the dash computer, when it says 99.9 you can see it happening.<p>Tom.
 

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The thing I do:<p>When I came near to my office or home 2-3 km's,I start to drive 2500 rpm's and let the turbo to cool down.When I stop,I wait 30 seconds(turn off the audio,clean the inside rapidly) and shut the car.<br>
 
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